After completing an upgrade to CentOS 6 to 6.1, the Bind service would not start. Upon further investigation the Bind service reported 2 zones which had errors. After deleting these zones, I was able to start the Bind service. Before the upgrade there were no problems and the service was able to start and restart without issue. My question is this: What in the upgrade from 6 to 6.1 could be causing problems, or is ISPConfig not compatible? (My guess is it works ok, just something in the upgrade, I do not know if there was a Bind update) If a service is not started, should not the ISPConfig monitor screen show an error? These zones were created in ISPConfig, is there a problem with how ISPConfig is saving them? (I am not thinking so since my other 8 zones work fine) The error I was given was the zones contained no A records, yet from the ISPConfig control panel they had A records, same ones they had before the upgrade. I am assuming this is an isolated incident, but I cannot be certain. I only have 3 ISPConfig servers, 2 of which are mirror DNS. Once I deleted those records they both came back online, so I have no other server to test on. I have an unconfigured testing environment which took the upgrades, but alas it has no DNS records so the error did not show up. Any ideas? Thoughts?